#main_body{
    width: 100%;
    height: 100%;
}
#div_left {
    width: 68%;
    height: 100%;
    float:left;
}
#div_right {
    float: right;
    width:32%;
    height: 100%;

}
#right_top {
    height:50%;
    width: 100%;
}
#right_bottom {
    height:50%;
    width: 100%;
}